山岳トンネル(13)

[VI-451] Rock mass characterization ahead of tunnel face using drilling data of computer jumbo

〇Takashi Ichiki¹, Masahito Yamagami¹, Shingo Miyamoto², Kenichi Fumimura³ (1.Taisei Advanced Center of Technology, 2.Taisei Corporation, Civil Engineering Division, Civil Engineering Department, 3.Taisei Coporation, Kyushu Branch)

Keywords:Mountain tunnel, Computer jumbo, survey ahead of face, drilling data, MWD, Hardness